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Had a couple of pattern elements nice and cheap from one of our major suppliers. Decided, in view of recent correspondence, to check insulation resistance before booking in job. Both measured around half a meg. Rang supplier. They said, no problem they’ll refund if I fill out usual form but cannot replace and guarantee that replacemnts would be any better.
Fair enough. Have ordered a different element which should still fit from another supplier.
But what would you do? Should I have unwrapped them and warmed them up to expel the damp? (But then possibly not been able to return them if it didn’t work.) Does that method do the job well enough or is the low IR a sign of poor quality?
Mike.Re: New fan elements – half a megohm insulation.
I think that storage and type of packing is a factor in such problems and drying or trying to dry out the elements may be possible, that said once their unpacked if it does not cure the problem then returns become difficult, personally I would return them as they may be problematic for you.
Re: New fan elements – half a megohm insulation.
Why can’t you return them just because they have been opened?
If they are faulty then whether they are wrapped or not does not come into it. You have the same rights as any other consumer and these suppliers need to realise this.
FranzRe: New fan elements – half a megohm insulation.
You’re right Franz. They’re only in flimsy clear bags anyway so I don’t think unwrapping them would really render them unreturnable.
What I really want to know is whether warming them up prior to fitting is a reliable and permanent fix or will they rapidly return to the below spec state and my customer be in (at least theoretical) danger? And will they soon fail? Previous one in this particular oven (Diplomat dual fuel cooker) lasted about three years.
Mike.Re: New fan elements – half a megohm insulation.
We regulary cooked the elments prior to fitting either by disconnecting earth for a while or putting them in a working oven,usually means they have got damp somewhere along the line.In my experience 90{e5d1b7155a01ef1f3b9c9968eaba33524ee81600d00d4be2b4d93ac2e58cec2d} will be OK,shove them in the oven for an hour after you have cooked lunch.Take the extra yorkshire puddings out first,oh and don’t forget to take the plastic bag off.Re bag them when cooled in an airtight bag.
I sometimes stick a de- humidifier in my van for the weekend to try keep moisture down amongst the spares.Re: New fan elements – half a megohm insulation.
Thanks spimps. I’ll do some experimenting.
“and don’t forget to take the plastic bag off” – yeah, never would have thought of that.Mike.
Re: New fan elements – half a megohm insulation.
Years ago I disconnected the earth and put a voltmeter in series with the earth and you can watch the voltage to earth decrease as the damp leaves the element.
Bit excited today as The Mighty Lincoln City are in the draw for the FA cup tomoz with the big boys 😀Re: New fan elements – half a megohm insulation.
Hydroscopic elements don’t always dry out and it’s not only confined to spares, I can remember installing brand new cookers with excessive earth leakage and even dropping the earth of and running them for hours failed to reduce the reading and the only remedy was to replace the appliances. I have had many instances where heating up elements has dried out the elements and they are fine after that but some just will not dry out.
Like others have said returning them should not be an issue and the time involved messing about with what is a supplier problem may not be cost effective in the end.Re: New fan elements – half a megohm insulation.
Well I put one on top of a storage heater for two nights and a day. When I took it off and measured it still hot it was 68Mohm.
Couple of hours later after cooling it was 124Mohm.
Will leave it in a cool place and measure again in a day or two.
Mike.Re: New fan elements – half a megohm insulation.
Had to fit a Neff element today from my van stock it read .5 on the megger so disconnected earth and after ten minutes it read 85 so left it on.
It doesn’t always work but 8 out of 10 will be OK long term and against the hassle of return for me it’s the better option.
Having had it as van stock for maybe 2 or 3 months it’s not surprising that it has absorbed some moisture.They are cheap enough with a decent profit margin so don’t I worry too much about the few failures.Re: New fan elements – half a megohm insulation.
Fitted this one yesterday, it was then reading 38M. Don’t know if that means it had begun to absorb moisture again. I guess as long as it gets used at least once a week it’ll hold up.
I wonder if these problematic Lux washer dryer elements I seem to be getting a spate of are caused by infrequent use of the dryers.
Mike.
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